Hey Woody, thanks for the post! You have helped alot of US builders, I was kinda hoping that you would reply.

This system is going to use Co2 for power.
I have been looking at this regulator to use. http://www.palmer-pursuit.com/online-catalog/stabilizer-female.htmhttp://www.palmer-pursuit.com/online...zer-female.htm

Some people around here have used it and I have not herd any bad things. Any super secret UK regs that you think might be better? I was kind of planning of a buffer tank regardless to try to keep freezing from going on.

I have not actually picked out the cylinder yet, but I would like to get one with at least .25 (6.3mm) ports if possible.
My choice of Valve and will determine what cylinder I pick.
-I could go with a Spring return such as http://www.Mcmaster.comwww.Mcmaster.com part # 6498K548 @ 150PSI if I were to find a large valve that could really give some awesome flow.
- Or a regular aluminum double acting cylinder @ 140PSI
- Or a steel double acting @ 150PSI

Here is where I need some advice. What cylinder/regulator/valve combo would give me the best toss? I would like to have something like a 30pound Toro, little sister or any other nice flipper bot that you can think of.

~Chad